West Virginia cannabis testing requirements

Required tests

• Potency
• Pesticides
• Residual solvents
• Heavy metals
• Microbials
• Mycotoxins
• Water activity
• Moisture
• Foreign matter
• Other (see notes)

ISO/IEC 17025 accreditation

Required. An applicant must submit a valid certificate of accreditation from an ILAC MRA recognized body (64CSR111 4.2.4), defined as evidence of compliance with ISO/IEC 17025 (2.5). Losing accreditation is grounds for revocation (5.2.9).

Notes

• Rules: 64CSR111, Medical Cannabis Program - Laboratories (effective May 8, 2025; sunsets August 1, 2030).
• W. Va. Code 16A-7-4 requires a test at harvest and at final processing, and certification of testing labs by the Office of Laboratory Services.
• Minimum panel (64CSR111 10.4): pesticides, solvents, water activity and moisture, THC and CBD, microbiological contaminants.
• The COA must also show heavy metals (mercury, lead, cadmium, arsenic), foreign material and pesticide residue within Bureau limits (12.5.2).
• Microbials and mycotoxins on the COA: total aerobic count, total yeast and mold, P. aeruginosa, Aspergillus spp., S. aureus, E. coli, Salmonella, aflatoxins B1, B2, G1, G2 and ochratoxin A.
• Other: stability testing of each harvest batch at 6-month intervals for one year (64CSR111 7.1).
• Terpene testing is not required.
• Agency change: the Bureau for Public Health now sits in the Department of Health, after the 2024 split of the former DHHR.